Burrowing trilobites

Trilobites, the extinct marine creatures famous to fossil-hunters everywhere, may have once done digging of their own, say British and Swedish researchers.

Rocks found in a Swedish limestone quarry contain the remains of trilobites inside networks of tunnels, which appear to have been subsurface thoroughfares for the little bug-like critters.

Posted by David on August 16, 2006 9:12 PM